Comprehensive registry of esophageal cancer in Japan, 2016.

Background: The registration committee for esophageal cancer in the Japan Esophageal Society (JES) has collected the characteristics, treatments, and outcomes of patients who underwent any treatment in 2016 in Japan.

Methods: We analyzed data on patients who had visited the participating hospitals in 2016. We collected the data using the National Clinical Database with a web-based data collection system.

Homology-feature-assisted quantification of fibrotic lesions in computed tomography images: a proof of concept for CT image feature-based prediction for gene-expression-distribution.

Purpose: Computed tomography (CT) image is promising for diagnosing of interstitial idiopathic pneumonias (IIPs); however, quantification of IIPs lesions in CT images is required. This study aimed to quantitatively evaluate fibrotic lesions in CT images using homology-based image analysis.

Methods: We collected publicly available CT images comprising 47 fibrotic images and 36 non-fibrotic images.

Regional disparities in IMRT utilization in Japan: analysis of trends and associated medical resources from 2015 to 2019†.

Intensity-modulated radiation therapy (IMRT) uses intensity-modulated photon beams from multiple directions to achieve conformal dose delivery to a target with a complex shape while reducing the dose to organs at risk. We analyzed the trends in IMRT utilization rates across Japanese prefectures from 2015 to 2019 and investigated their relationship with medical resources. Data from the National Database of Health Insurance Claims and the Japanese Society for Radiation Oncology Structure Survey were analyzed.

A JROD survey: nationwide overview of radiotherapy data from 2015 to 2021.

The purpose of this survey was to examine the status of radiotherapy in Japan based on the cases registered in the Japanese Radiation Oncology Database (JROD), from 2015 to 2021, and to provide basic data to help improve the usefulness of the JROD in the future. The study population consisted of patients who underwent radiotherapy between 2014 and 2020 and did not opt out of the study. The survey item data analyzed in this study were entered into the database at each radiotherapy institution by referring to medical records from the preceding year.

Is Thoracic Duct Resection Necessary for Esophageal Squamous Cell Carcinoma Patients Treated with Neoadjuvant Chemoradiotherapy? A Propensity-Matched Analysis Based on the Comprehensive Registry of Esophageal Cancer in Japan.

Background: The thoracic duct (TD) plays an important role in nutrition and immunity but is often resected with the esophagus when dissecting surrounding lymph nodes in patients with esophageal squamous cell carcinoma (ESCC). We examined whether indiscriminate TD resection improved the prognosis of patients with ESCC treated with neoadjuvant chemoradiotherapy (NACRT) followed by esophagectomy.

Methods: A total of 440 patients treated with NACRT followed by esophagectomy between 2007 and 2012 were analyzed using data from the Comprehensive Registry of Esophageal Cancer in Japan.

Comprehensive registry of esophageal cancer in Japan, 2015.

Background: The registration committee for esophageal cancer in the Japan Esophageal Society (JES) has collected the patients' characteristics, treatment, and outcomes of patients who underwent any treatment during 2015 in Japan.

Methods: We analyzed patients' data who had visited the participating hospitals in 2015. We collected the data using the National Clinical Database with a web-based data collection system.

Japanese structure survey of radiation oncology in 2015.

This article describes the ongoing structure of radiation oncology in Japan in terms of equipment, personnel, patient load and geographic distribution to identify and overcome any existing limitations. From May 2016 to August 2018, the Japanese Society for Radiation Oncology conducted a questionnaire based on the Japanese national structure survey of radiation oncology in 2015. Data were analyzed based on the institutional stratification by the annual number of new patients treated with radiotherapy per institution.

Prognosis of Patients with Esophageal Carcinoma After Routine Thoracic Duct Resection: A Propensity-matched Analysis of 12,237 Patients Based on the Comprehensive Registry of Esophageal Cancer in Japan.

Objective: To clarify whether routine thoracic duct (TD) resection improves the prognosis of patients with esophageal cancer after radical esophagectomy.

Summary Of Background Data: Although TD resection can cause nutritional disadvantage and immune suppression, it has been performed for the resection of surrounding lymph nodes.

Methods: We analyzed 12,237 patients from the Comprehensive Registry of Esophageal Cancer in Japan who underwent esophagectomy between 2007 and 2012.

Comprehensive registry of esophageal cancer in Japan, 2014.

Background: The registration committee for esophageal cancer in the Japan Esophageal Society (JES) has collected the patients' characteristics, treatment, and outcomes annually.

Methods: We analyzed the data of patients who had visited the participating hospitals in 2014. We collected the data with a web-based data collection system using the National Clinical Database.

Comprehensive registry of esophageal cancer in Japan, 2013.

Background: Esophageal cancer is the eighth most common cause of cancer mortality in Japan. More than 11,000 people had died from esophageal cancer in 2018. The Japan Esophageal Society has collected the data on patients' characteristics, performed treatment, and outcomes annually.

Japanese structure survey of radiation oncology in 2013.

This paper describes the ongoing structure of radiation oncology in Japan in terms of equipment, personnel, patient load and geographic distribution to identify and overcome any existing limitations. From December 2014 to July 2017, the Japanese Society for Radiation Oncology conducted a questionnaire based on the Japanese national structure survey of radiation oncology in 2013. Data were analyzed based on institutional stratification by the annual number of new patients treated with radiotherapy per institution.

Chemoradiotherapy and radiotherapy alone in patients with esophageal cancer aged 80 years or older based on the Comprehensive Registry of Esophageal Cancer in Japan.

Background: There has been no definitive evidence of chemoradiotherapy being superior to radiotherapy alone in patients aged 80 years or older. The purpose of the present study was to evaluate the results of radiotherapy and chemoradiotherapy in patients aged 80 years or older with esophageal cancer in the Japanese Nationwide Cancer Database.

Methods: A total of 358 patients aged 80 years or older who were treated with radiotherapy alone or with chemoradiotherapy for esophageal cancer between 2009 and 2011 were enrolled.

Comparison of the effects of radiotherapy doses of 50.4 Gy and 60 Gy on outcomes of chemoradiotherapy for thoracic esophageal cancer: subgroup analysis based on the Comprehensive Registry of Esophageal Cancer in Japan from 2009 to 2011 by the Japan Esophageal Society.

Background: In definitive chemoradiotherapy (CRTx) for esophageal cancer, a radiotherapy (RT) dose of 50.4 Gy in 28 fractions has been the standard in many countries, while 60 Gy in 30 fractions has been frequently used in Japan. To clarify the optimal RT dose in CRTx for esophageal cancer, we compared clinical outcomes with the two doses using data from the Comprehensive Registry of Esophageal Cancer in Japan by the Japan Esophageal Society (JES).

Japanese structure survey of radiation oncology in 2012.

This paper describes the ongoing structure of radiation oncology in Japan in terms of equipment, personnel, patient load and geographic distribution to identify and overcome any existing limitations. From March 2013 to August 2016, the Japanese Society for Radiation Oncology conducted a questionnaire based on the Japanese national structure survey of radiation oncology in 2012. Data were analyzed based on the institutional stratification by the annual number of new patients treated with radiotherapy per institution.

Japanese Structure Survey of Radiation Oncology in 2011.

We evaluated the evolving structure of radiation oncology in Japan in terms of equipment, personnel, patient load and geographic distribution to identify and overcome any existing limitations. From March 2012 to August 2015, the Japanese Society for Radiation Oncology conducted a questionnaire based on the Japanese national structure survey of radiation oncology in 2011. Data were analyzed based on the institutional stratification by the annual number of new patients treated with radiotherapy per institution.

Current status of radiotherapy for patients with thoracic esophageal cancer in Japan, based on the Comprehensive Registry of Esophageal Cancer in Japan from 2009 to 2011 by the Japan Esophageal Society.

Background: Although esophagectomy is the standard treatment for resectable esophageal cancer, chemoradiotherapy or radiotherapy alone is also selected for some cases. However, there have been very few detailed studies conducted on a large scale on the efficacy of these treatments in Japan.

Methods: Of the patients enrolled in the Comprehensive Registry of Esophageal Cancer in Japan by the Japan Esophageal Society for the 2015-2017 surveys (patients treated between 2009 and 2011), the data of 388 patients treated by definitive radiotherapy alone (RTx) and 1964 patients treated by definitive chemoradiotherapy (CRTx) were analyzed.

Japanese structure survey of radiation oncology in 2010.

We evaluated the evolving structure of radiation oncology in Japan in terms of equipment, personnel, patient load, and geographic distribution to identify and overcome any existing limitations. From March 2011 to June 2013, the Japanese Society for Radiation Oncology conducted a questionnaire based on the Japanese national structure survey of radiation oncology in 2010. Data were analyzed based on the institutional stratification by the annual number of new patients treated with radiotherapy per institution.

Correction to: Comprehensive Registry of Esophageal Cancer in Japan, 2011.

In the original publication of the article, the below name of institutions were not included in the table of Institution-registered cases in 2011.

Efficacy of lymph node dissection by node zones according to tumor location for esophageal squamous cell carcinoma.

Background: The extent of node dissection in esophageal cancer surgery is usually estimated by the number of resected nodes, irrespective of the area of dissection. The efficacy of lymph node dissection by area was evaluated according to the location of the primary tumor.

Methods: The study group comprised the 3827 patients who underwent R0 esophagectomy with three-field lymph node dissection for squamous cell carcinoma, registered in a nationwide registry in Japan.

Treatment outcomes of patients with FIGO Stage I/II uterine cervical cancer treated with definitive radiotherapy: a multi-institutional retrospective research study.

The purpose of this study was to analyze the patterns of care and outcomes of patients with FIGO Stage I/II cervical cancer who underwent definitive radiotherapy (RT) at multiple Japanese institutions. The Japanese Radiation Oncology Study Group (JROSG) performed a questionnaire-based survey of their cervical cancer patients who were treated with definitive RT between January 2000 and December 2005. A total of 667 patients were entered in this study.